UML中有三大基本組成元素:
1. 事物(Things)
1.1 結構事物(Structural Things)
1.2 行為事物(Behavioral Things)
1.3 分組行為(Grouping Things)
1.4 備注事物(Annotational Things)
2.關系(Relationships):簡單的講就是把各個事物關聯在一起
2.1 依賴關系(Dependency)
2.2 一般化行為(Generationaliztion)
2.3 關聯關系(Association)
2.4 實現關系(Realization)
3. 圖形(Diagrams)
3.1 Class Diagram
3.2 Deployment Diagram
3.3 Component Diagram
3.4 Object Diagram
3.5 User Case Diagram
3.6 Sequence Diagram
3.7 Collaboration Diagram
3.8 Statechart Diagram
3.9 Activity Diagram
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